Search This Blog

Subscribe To

Games

Pictures

Connect With Us

Main menu section

Email Newsletter

Subscribe to our newsletter to get the latest updates to your inbox. ;-)

Your email address is safe with us!

Sports

Auto News

Games

Text Widget

Join me on Twitter

Contact Form

Name

Email
*

Message
*

chemisyrt SS 2 – SS3 Read up the following topics: (a) Polymers (b) Metals and their compounds REF: 1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio 2. IGCSE Chemistry by Earl Wilford Answer the following Questions 1. Lactic acid can be made from corn starch. It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable. (a) Suggest two advantages that PLA has compared with a polymer made from petroleum.[2] (b) The structure of PLA is given below. (i) What type of compound contains the group that is circled?[1] (ii) Complete the following sentence. Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2] (iii) Name a synthetic polyester. [1] (iv) Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2] 2. (a) Alkenes can polymerise. (i) Deduce the name and structural formula of the monomer from the structure of the [3] (ii) Draw the structure of the polymer formed from the following monomer. [2] (iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below. How are they similar? How are they different? [3] 3. No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal. (a) Complete the following equation. Fe2O3 + C → ………………. + …………………… iron ore charcoal [2] (b) In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace. (i) The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature. (ii) In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3] (c) Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon. (i) State a use of stainless steel. (ii) Name a metal, other than iron, in stainless steel. (iii) The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6] (d) One of the methods used to prevent iron or steel from rusting is to electroplate it with another metal, such as tin. Complete the following. The anode is made of ……………………………………….. . The cathode is made of ……………………………………… . The electrolyte is a solution of …………………………….. . [3] 4. (a) Aluminium is extracted by the electrolysis of its molten oxide. (i) Name the main ore of aluminium.[1] (ii) Why does the molten electrolyte contain cryolite?[1] (b) The ions that are involved in the electrolysis are Al3+ and O2-. (i) Write an equation for the reaction at the cathode.[2] (ii) Explain how carbon dioxide is formed at the anode.[2] (c) Give an explanation for each of the following. (i) Aluminium is used extensively in the manufacture of aircraft.[1] (ii) Aluminium is used to make food containers.[2] (iii) Aluminium electricity cables have a steel core.[1] via Blogger http://ift.tt/2iDcPy1 via Blogger http://ift.tt/2hw0bVD via Blogger http://ift.tt/2hNjl5o via Blogger http://ift.tt/2hoQl2I via Blogger http://ift.tt/2htzi2G via Blogger http://ift.tt/2ifl9VG

SS 2 – SS3

Read up the following topics:

(a) Polymers

(b) Metals and their compounds

REF:

1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio

2. IGCSE Chemistry by Earl Wilford

Answer the following Questions

1.Lactic acid can be made from corn starch.

It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable.

(a)Suggest two advantages that PLA has compared with a polymer made from petroleum.[2]

(b)The structure of PLA is given below.

(i)What type of compound contains the group that is circled?[1]

(ii)Complete the following sentence.

Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2]

(iii)Name a synthetic polyester. [1]

(iv)Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2]

2. (a)Alkenes can polymerise.

(i)Deduce the name and structural formula of the monomer from the structure of the

[3]

(ii)Draw the structure of the polymer formed from the following monomer.

[2]

(iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below.

How are they similar?

How are they different? [3]

3.No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal.

(a)Complete the following equation.

Fe2O3 + C → ………………. + ……………………

iron ore charcoal [2]

(b)In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace.

(i)The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature.

(ii)In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3]

(c)Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon.

(i)State a use of stainless steel.

(ii)Name a metal, other than iron, in stainless steel.

(iii)The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6]

(d)One of the methods used to prevent iron or steel from rusting is to electroplate it with

SCHEME OF WORK FOR SOCIAL STUDIES JSS 2 FIRST TERM SOCIAL GROUP TYPE/CHARACTERISTICS OF SOCIAL GROUP...

Home / 2016 at 03:44AM /
2016 at 05:45AM /
2016 at 07:45AM /
chemisyrt /
December 29 /
Reputation Marketing Experts /
Uncategorized
/ chemisyrt SS 2 – SS3 Read up the following topics: (a) Polymers (b) Metals and their compounds REF: 1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio 2. IGCSE Chemistry by Earl Wilford Answer the following Questions 1. Lactic acid can be made from corn starch. It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable. (a) Suggest two advantages that PLA has compared with a polymer made from petroleum.[2] (b) The structure of PLA is given below. (i) What type of compound contains the group that is circled?[1] (ii) Complete the following sentence. Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2] (iii) Name a synthetic polyester. [1] (iv) Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2] 2. (a) Alkenes can polymerise. (i) Deduce the name and structural formula of the monomer from the structure of the [3] (ii) Draw the structure of the polymer formed from the following monomer. [2] (iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below. How are they similar? How are they different? [3] 3. No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal. (a) Complete the following equation. Fe2O3 + C → ………………. + …………………… iron ore charcoal [2] (b) In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace. (i) The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature. (ii) In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3] (c) Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon. (i) State a use of stainless steel. (ii) Name a metal, other than iron, in stainless steel. (iii) The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6] (d) One of the methods used to prevent iron or steel from rusting is to electroplate it with another metal, such as tin. Complete the following. The anode is made of ……………………………………….. . The cathode is made of ……………………………………… . The electrolyte is a solution of …………………………….. . [3] 4. (a) Aluminium is extracted by the electrolysis of its molten oxide. (i) Name the main ore of aluminium.[1] (ii) Why does the molten electrolyte contain cryolite?[1] (b) The ions that are involved in the electrolysis are Al3+ and O2-. (i) Write an equation for the reaction at the cathode.[2] (ii) Explain how carbon dioxide is formed at the anode.[2] (c) Give an explanation for each of the following. (i) Aluminium is used extensively in the manufacture of aircraft.[1] (ii) Aluminium is used to make food containers.[2] (iii) Aluminium electricity cables have a steel core.[1] via Blogger http://ift.tt/2iDcPy1 via Blogger http://ift.tt/2hw0bVD via Blogger http://ift.tt/2hNjl5o via Blogger http://ift.tt/2hoQl2I via Blogger http://ift.tt/2htzi2G via Blogger http://ift.tt/2ifl9VG

chemisyrt SS 2 – SS3 Read up the following topics: (a) Polymers (b) Metals and their compounds REF: 1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio 2. IGCSE Chemistry by Earl Wilford Answer the following Questions 1. Lactic acid can be made from corn starch. It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable. (a) Suggest two advantages that PLA has compared with a polymer made from petroleum.[2] (b) The structure of PLA is given below. (i) What type of compound contains the group that is circled?[1] (ii) Complete the following sentence. Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2] (iii) Name a synthetic polyester. [1] (iv) Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2] 2. (a) Alkenes can polymerise. (i) Deduce the name and structural formula of the monomer from the structure of the [3] (ii) Draw the structure of the polymer formed from the following monomer. [2] (iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below. How are they similar? How are they different? [3] 3. No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal. (a) Complete the following equation. Fe2O3 + C → ………………. + …………………… iron ore charcoal [2] (b) In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace. (i) The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature. (ii) In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3] (c) Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon. (i) State a use of stainless steel. (ii) Name a metal, other than iron, in stainless steel. (iii) The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6] (d) One of the methods used to prevent iron or steel from rusting is to electroplate it with another metal, such as tin. Complete the following. The anode is made of ……………………………………….. . The cathode is made of ……………………………………… . The electrolyte is a solution of …………………………….. . [3] 4. (a) Aluminium is extracted by the electrolysis of its molten oxide. (i) Name the main ore of aluminium.[1] (ii) Why does the molten electrolyte contain cryolite?[1] (b) The ions that are involved in the electrolysis are Al3+ and O2-. (i) Write an equation for the reaction at the cathode.[2] (ii) Explain how carbon dioxide is formed at the anode.[2] (c) Give an explanation for each of the following. (i) Aluminium is used extensively in the manufacture of aircraft.[1] (ii) Aluminium is used to make food containers.[2] (iii) Aluminium electricity cables have a steel core.[1] via Blogger http://ift.tt/2iDcPy1 via Blogger http://ift.tt/2hw0bVD via Blogger http://ift.tt/2hNjl5o via Blogger http://ift.tt/2hoQl2I via Blogger http://ift.tt/2htzi2G via Blogger http://ift.tt/2ifl9VG
Reviewed by Olusegun Bolujo
on
December 29, 2016
Rating: 5

chemisyrt SS 2 – SS3 Read up the following topics: (a) Polymers (b) Metals and their compounds REF: 1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio 2. IGCSE Chemistry by Earl Wilford Answer the following Questions 1. Lactic acid can be made from corn starch. It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable. (a) Suggest two advantages that PLA has compared with a polymer made from petroleum.[2] (b) The structure of PLA is given below. (i) What type of compound contains the group that is circled?[1] (ii) Complete the following sentence. Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2] (iii) Name a synthetic polyester. [1] (iv) Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2] 2. (a) Alkenes can polymerise. (i) Deduce the name and structural formula of the monomer from the structure of the [3] (ii) Draw the structure of the polymer formed from the following monomer. [2] (iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below. How are they similar? How are they different? [3] 3. No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal. (a) Complete the following equation. Fe2O3 + C → ………………. + …………………… iron ore charcoal [2] (b) In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace. (i) The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature. (ii) In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3] (c) Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon. (i) State a use of stainless steel. (ii) Name a metal, other than iron, in stainless steel. (iii) The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6] (d) One of the methods used to prevent iron or steel from rusting is to electroplate it with another metal, such as tin. Complete the following. The anode is made of ……………………………………….. . The cathode is made of ……………………………………… . The electrolyte is a solution of …………………………….. . [3] 4. (a) Aluminium is extracted by the electrolysis of its molten oxide. (i) Name the main ore of aluminium.[1] (ii) Why does the molten electrolyte contain cryolite?[1] (b) The ions that are involved in the electrolysis are Al3+ and O2-. (i) Write an equation for the reaction at the cathode.[2] (ii) Explain how carbon dioxide is formed at the anode.[2] (c) Give an explanation for each of the following. (i) Aluminium is used extensively in the manufacture of aircraft.[1] (ii) Aluminium is used to make food containers.[2] (iii) Aluminium electricity cables have a steel core.[1] via Blogger http://ift.tt/2iDcPy1 via Blogger http://ift.tt/2hw0bVD via Blogger http://ift.tt/2hNjl5o via Blogger http://ift.tt/2hoQl2I via Blogger http://ift.tt/2htzi2G via Blogger http://ift.tt/2ifl9VG

1. New School Chemistry for Senior Secondary Schools by Osei Yaw Ababio

2. IGCSE Chemistry by Earl Wilford

Answer the following Questions

1.Lactic acid can be made from corn starch.

It polymerises to form the polymer, polylactic acid (PLA ) which is biodegradable.

(a)Suggest two advantages that PLA has compared with a polymer made from petroleum.[2]

(b)The structure of PLA is given below.

(i)What type of compound contains the group that is circled?[1]

(ii)Complete the following sentence.

Lactic acid molecules can form this group because they contain both an——————— group and an————————————- group. [2]

(iii)Name a synthetic polyester. [1]

(iv)Is the formation of PLA, an addition or condensation polymerisation? Give a reason for your choice. [2]

2. (a)Alkenes can polymerise.

(i)Deduce the name and structural formula of the monomer from the structure of the

[3]

(ii)Draw the structure of the polymer formed from the following monomer.

[2]

(iii) Compare the structure of a protein with that of a synthetic polyamide. The structure of a typical protein is given below.

How are they similar?

How are they different? [3]

3.No one knows where iron was first isolated. It appeared in China, the Middle East and in Africa. It was obtained by reducing iron ore with charcoal.

(a)Complete the following equation.

Fe2O3 + C → ………………. + ……………………

iron ore charcoal [2]

(b)In 1705 Abraham Darby showed that iron ore could be reduced using coke in a blast furnace.

(i)The temperature in the furnace rises to 2000 °C. Write an equation for the exothermic reaction that causes this high temperature.

(ii)In the furnace, the ore is reduced by carbon monoxide. Explain how this is formed. [3]

(c)Stainless steel is an alloy of iron. It contains iron, other metals and about 0.5% of carbon.

(i)State a use of stainless steel.

(ii)Name a metal, other than iron, in stainless steel.

(iii)The iron from the blast furnace is impure. It contains about 5% of carbon and other impurities, such as silicon and phosphorus. Describe how the percentage of carbon is reduced and the other impurities are removed. [6]

(d)One of the methods used to prevent iron or steel from rusting is to electroplate it with